1		6
				2
	7			1			2
		5		6
			2		1
3			5			8
			7
				4		2

Difficulty: Easy (0)

	4				7	2	5
3
			2	8		5
	6
						4
	2		3	1
							8
2	7	8				3

Difficulty: Very easy (0)

5
1	7
2	6			4
7				6			3
3			4				5
			2			3	7
						1	8
							6

Difficulty: Super easy (0)

4		8
				4			3
	1
				5	2		8
2		1	7
						7
3			5
					5		6

Difficulty: Very easy (0)